Can bettas live with pea puffers?
❌ Not recommended No, it's not recommended
- ❌ Not recommended Pea puffer is a known fin-nipper and will shred the long fins of betta fish.
- ❌ Not recommended Both are territorial and use the same part of the tank, so constant fights are likely.
- ⚠️ Caution Pea puffer is aggressive; betta fish may get into fights with it.
- ⚠️ Caution Pea puffer is best kept in a species-only tank: it is nippy and a picky, slow eater.
| Betta fish | Pea puffer | |
| Temperature | 72–86 °F (22–30 °C) | 72–82 °F (22–28 °C) |
| pH | 6–8 | 6.8–8 |
| Adult size | 2.8 in (7 cm) | 1.2 in (3 cm) |
| Temperament | Semi-aggressive | Aggressive |
| Swims in | Top | All levels |
| Minimum tank | 10 gal | 5 gal |
Shared temperature: 72–82 °F (22–28 °C) · Shared pH: 6.8–8
If you already have both
- Separate them as soon as possible, or rehome one of them. Use a divider in the meantime.
See all betta fish tank mates and pea puffer tank mates, or add more species in the checker.
FAQ
Can bettas live with pea puffers?
No, it's not recommended. Pea puffer is a known fin-nipper and will shred the long fins of betta fish. Both are territorial and use the same part of the tank, so constant fights are likely.
What temperature for bettas and pea puffers?
Betta fish: 72–86 °F (22–30 °C). Pea puffer: 72–82 °F (22–28 °C). Shared range: 72–82 °F (22–28 °C).
What size tank for bettas and pea puffers?
At least 10 US gallons, more as you add fish.
Note: Compatibility depends on individual temperament, tank size, decor and how fish are introduced. Our verdicts use conservative rules applied to published care data (see methodology). They are guidance, not a guarantee. Quarantine new fish and watch for chasing, torn fins or hiding.